Even so, the idea was initially met with skepticism among practicing dentists, raising questions on the viability of its future acceptance.
The concept that a machine-milled ceramic restoration could be fabricated chairside with the benefit of only one dental visit was revolutionary for restorative dentistry. On September 19, 1985, the first chairside ceramic inlay restoration was placed at the University of Zurich Dental School with the CEREC 1 CAD/CAM system (Sirona Dental Systems, Charlotte, NC). Following is a brief discussion of the evolution of CEREC and CAD/CAM, a review of the literature, a detailed explanation on the use of the current state of the art CEREC AC, and an examination of the benefits of CAD/CAM to the US Army dental mission. The CEREC system is the original and most-researched system on the market and has been used in the US Army Dental Command since 2003, and will therefore be the focus of this article. Paul, MN), and iTero (Cadent, Carlstadt, NJ). Currently, there are 4 CAD/CAM systems on the market designed for the ceramic restorative dental application: CEREC Acquisition Center (Sirona, Bensheim, Germany), E4D (D4D Technologies, Richardson, TX), Lava C.O.S.
This technology would enable a dentist to complete one or multiple ceramic restorations (inlays, onlays, veneers, and full crowns) chairside in a single appointment. Computerized dentistry was introduced in 1980 when Dr Werner Mormann of the University of Zurich, anticipating the attraction of restoring posterior teeth with tooth-colored materials, developed the bonded ceramic inlay technique while at the same time addressing the issue of fabricating the restorations using computer-aided design/computer-aided manufacturing (CAD/CAM).
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